commit 17e9fc09c31dffdc647385220a14daef5a35273a Author: Nick Mathewson nickm@torproject.org Date: Tue Jul 9 12:37:11 2013 -0400
Coverage support: build with --enable-coverage to have tests run with gcov
If you pass the --enable-coverage flag on the command line, we build our testing binaries with appropriate options eo enable coverage testing. We also build a "tor-cov" binary that has coverage enabled, for integration tests.
On recent OSX versions, test coverage only works with clang, not gcc. So we warn about that.
Also add a contrib/coverage script to actually run gcov with the appropriate options to generate useful .gcov files. (Thanks to automake, the .o files will not have the names that gcov expects to find.)
Also, remove generated gcda and gcno files on clean. --- .gitignore | 2 ++ Makefile.am | 8 ++++++++ changes/fancy_testing | 4 ++++ configure.ac | 14 ++++++++++++-- contrib/coverage | 13 +++++++++++++ src/common/include.am | 4 ++++ src/or/include.am | 16 ++++++++++++++++ src/test/include.am | 2 ++ 8 files changed, 61 insertions(+), 2 deletions(-)
diff --git a/.gitignore b/.gitignore index bb3817b..201d04d 100644 --- a/.gitignore +++ b/.gitignore @@ -152,6 +152,8 @@ /src/or/or_sha1.i /src/or/tor /src/or/tor.exe +/src/or/tor-cov +/src/or/tor-cov.exe /src/or/libtor.a /src/or/libtor-testing.a /src/or/libtor.lib diff --git a/Makefile.am b/Makefile.am index a736638..1bc1077 100644 --- a/Makefile.am +++ b/Makefile.am @@ -32,6 +32,12 @@ EXTRA_DIST+= \ README \ ReleaseNotes
+if COVERAGE_ENABLED +TEST_CFLAGS=-fno-inline -fprofile-arcs -ftest-coverage +else +TEST_CFLAGS= +endif + #install-data-local: # $(INSTALL) -m 755 -d $(LOCALSTATEDIR)/lib/tor
@@ -89,3 +95,5 @@ version: (cd "$(top_srcdir)" && git rev-parse --short=16 HEAD); \ fi
+mostlyclean-local: + rm -f src/*/*.gc{da,no} diff --git a/changes/fancy_testing b/changes/fancy_testing index 3e8ccbc..ad197c6 100644 --- a/changes/fancy_testing +++ b/changes/fancy_testing @@ -10,3 +10,7 @@ in the unit tests; all functions exposed from a module for unit-testing only are now static in production builds.
+ - Add an --enable-coverage configuration option to make the unit + tests (and a new src/or/tor-cov target) to build with gcov test + coverage support. + diff --git a/configure.ac b/configure.ac index 34ed524..22aac31 100644 --- a/configure.ac +++ b/configure.ac @@ -41,8 +41,13 @@ AC_ARG_ENABLE(curve25519, AS_HELP_STRING(--disable-curve25519, Build Tor with no curve25519 elliptic-curve crypto support)) AC_ARG_ENABLE(unittests, AS_HELP_STRING(--disable-unittests, [Don't build unit tests for Tor. Risky!])) +AC_ARG_ENABLE(coverage, + AS_HELP_STRING(--enable-coverage, [Enable coverage support in the unit-test build]))
-AM_CONDITIONAL(UNITTESTS_ENABLED, test x$unittests != xno) +AM_CONDITIONAL(UNITTESTS_ENABLED, test x$enable_unittests != xno) +AM_CONDITIONAL(COVERAGE_ENABLED, test x$enable_coverage = xyes) + +echo "COVERAGE: $enable_coverage"
if test "$enable_static_tor" = "yes"; then enable_static_libevent="yes"; @@ -1457,7 +1462,12 @@ if test x$enable_gcc_warnings = xyes || test x$enable_gcc_warnings_advisory = xy # CFLAGS="$CFLAGS -Winline" fi
- +if test "$enable_coverage" = yes && test "$have_clang" = "no"; then + case "$host_os" in + darwin*) + AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-profiling.]) + esac +fi
CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
diff --git a/contrib/coverage b/contrib/coverage new file mode 100755 index 0000000..52fe96d --- /dev/null +++ b/contrib/coverage @@ -0,0 +1,13 @@ +#!/bin/sh +# Copyright 2013 The Tor Project, Inc. +# See LICENSE for licensing information. + +# coverage -- run gcov on the appropriate set of object files to extract +# coverage information. + +for fn in src/{or,common}/*.c; do + BN=`basename $fn` + DN=`dirname $fn` + F=`echo $BN | sed -e 's/.c$//;'` + gcov -o $DN/src_*$F.o $fn +done diff --git a/src/common/include.am b/src/common/include.am index 3d8cc8e..3f5a0e0 100644 --- a/src/common/include.am +++ b/src/common/include.am @@ -82,6 +82,10 @@ src_common_libor_event_testing_a_SOURCES = $(LIBOR_EVENT_A_SOURCES) src_common_libor_testing_a_CPPFLAGS = -DTOR_UNIT_TESTS $(AM_CPPFLAGS) src_common_libor_crypto_testing_a_CPPFLAGS = -DTOR_UNIT_TESTS $(AM_CPPFLAGS) src_common_libor_event_testing_a_CPPFLAGS = -DTOR_UNIT_TESTS $(AM_CPPFLAGS) +src_common_libor_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS) +src_common_libor_crypto_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS) +src_common_libor_event_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS) +
COMMONHEADERS = \ src/common/address.h \ diff --git a/src/or/include.am b/src/or/include.am index 91b9bfc..f5002e6 100644 --- a/src/or/include.am +++ b/src/or/include.am @@ -5,6 +5,9 @@ if UNITTESTS_ENABLED noinst_LIBRARIES += \ src/or/libtor-testing.a endif +if COVERAGE_ENABLED +noinst_PROGRAMS+= src/or/tor-cov +endif
if BUILD_NT_SERVICES tor_platform_source=src/or/ntmain.c @@ -99,6 +102,7 @@ AM_CPPFLAGS += -DSHARE_DATADIR=""$(datadir)"" \ -DBINDIR=""$(bindir)""
src_or_libtor_testing_a_CPPFLAGS = -DTOR_UNIT_TESTS $(AM_CPPFLAGS) +src_or_libtor_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)
# -L flags need to go in LDFLAGS. -l flags need to go in LDADD. # This seems to matter nowhere but on windows, but I assure you that it @@ -112,6 +116,18 @@ src_or_tor_LDADD = src/or/libtor.a src/common/libor.a \ @TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@
+if COVERAGE_ENABLED +src_or_tor_cov_SOURCES = src/or/tor_main.c +src_or_tor_cov_CPPFLAGS = -DTOR_UNIT_TESTS $(AM_CPPFLAGS) +src_or_tor_cov_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS) +src_or_tor_cov_LDFLAGS = @TOR_LDFLAGS_zlib@ @TOR_LDFLAGS_openssl@ @TOR_LDFLAGS_libevent@ +src_or_tor_cov_LDADD = src/or/libtor-testing.a src/common/libor-testing.a \ + src/common/libor-crypto-testing.a $(LIBDONNA) \ + src/common/libor-event-testing.a \ + @TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \ + @TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@ +endif + ORHEADERS = \ src/or/addressmap.h \ src/or/buffers.h \ diff --git a/src/test/include.am b/src/test/include.am index 08eb7fb..989cf4e 100644 --- a/src/test/include.am +++ b/src/test/include.am @@ -31,6 +31,8 @@ src_test_test_SOURCES = \ src/test/test_config.c \ src/ext/tinytest.c
+src_test_test_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS) + src_test_test_CPPFLAGS= $(src_test_AM_CPPFLAGS)
src_test_bench_SOURCES = \